Receptacles – Closures – With closure opening arrangements for means
Patent
1973-06-29
1976-01-13
Keenan, Michael J.
Receptacles
Closures
With closure opening arrangements for means
113121C, B65D 4132
Patent
active
039319091
ABSTRACT:
This specification discloses an easy-opening closure for a can end which comprises an opening formed by partially severing a portion from the can end to leave the portion attached thereto by an integral neck, and a closure member formed from said severed portion and which is larger than said opening. The sheet metal adjacent the free edge of the opening is downwardly turned while the sheet metal adjacent the free edge of the closure member is upwardly turned, said free edges being in contact with or in close proximity to each other. A sealant is applied at least in the region of the free edges if required by the purpose for which the can end is to be used. The specification also discloses a method of forming such a closure comprising the steps of: forming an upwardly directed bulge in the sheet metal, thus stretching the sheet; partially severing a central portion of said bulge, to define an opening and said severed portion defining a closure member for said opening, and displacing the closure member downwardly so that its free edge is below the free edge of the opening; partially flattening the thus truncated bulge of sheet metal around said opening to reduce its size, and turning downwardly said free edge defining said opening; partially flattening the closure member to increase its size, and turning upwardly said free edge of the closure member, the free edge portion of said closure member being in contact with or in close proximity to said free edge defining said opening, and applying a sealant at least on the region of the free edges of the opening and the closure member to seal the closure if required by the purpose for which said container member is to be used.
REFERENCES:
patent: 2176898 (1939-10-01), Fried
patent: 2261117 (1941-11-01), Jack
patent: 2787394 (1957-04-01), Baumann
patent: 3195763 (1965-07-01), Fried et al.
patent: 3261497 (1966-07-01), Lipske
patent: 3266452 (1966-08-01), Taylor
patent: 3355058 (1967-11-01), Asbury
patent: 3362569 (1968-01-01), Geiger
patent: 3472415 (1969-10-01), Woodruff
Dalli Alan George
Debenham Michael
Shackleford Ralph Edward
Keenan Michael J.
The Broken Hill Proprietary Company Ltd.
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